As promised, I asked my teacher about icon, and he showed me quotes from Bible, (apostle Paul's quote), which say about resurrection of dead people, etc.
According to its, there is no matches to be as Imperial Family portraits, since all icons show people in way of looking they looked just before their end.
So, he also states, that portrait highly might an icon, since he thinks rules of portraying icons are not respected, and was painted by individual will of painter (as painter liked to be painted). Hope things are clear now.
Also, he states , portraying younger people as older, do not match with their historical existing at all.